code: def add_cpu_time(self, time):
      if time > self.max_cpu_time:
          self.max_cpu_time = time
      if time < self.min_cpu_time:
          self.min_cpu_time = time
      self.cpu_time += time
  
file_path: VisualDL/visualdl/component/profiler/parser/operator_parser.py
imports: import collections
  from .kernel_parser import DeviceItem
  from .utils import wrap_tree
label_desc: Use image node_id 5 for calling the OperatorItem obj's underlying member method code with example usage: obj.add_cpu_time(time) without return types